At the moment segment repairer is skipping offline nodes in checks like
clumped pieces and off placement pieces. This change is fixing this
problem using new version of KnownReliable method. New method is
returning both online and offline nodes. Provided data can be used to
find clumped and off placement pieces.
We are not using DownloadSelectionCache anymore with segment repairer.
https://github.com/storj/storj/issues/5998
Change-Id: I236a1926e21f13df4cdedc91130352d37ff97e18
When pieces fail an audit (hard fail, meaning the node acknowledged it
did not have the piece or the piece was corrupted), we will now remove
those pieces from the segment.
Previously, we did not do this, and some node operators were seeing the
same missing piece audited over and over again and losing reputation
every time.
This change will include both verification and reverification audits. It
will also apply to pieces found to be bad during repair, if
repair-to-reputation reporting is enabled.
Change-Id: I0ca7af7e3fecdc0aebbd34fee4be3a0eab53f4f7
Additional test case to cover situation where we are trying to
repair segment with specific placement set. We need to be sure
that segment won't be repaired into nodes that are outside
segment placement, even if that means that repair will fail.
Change-Id: I99d238aa9d9b9606eaf89cd1cf587a2585faee91
This change makes dial timeout configurable and change it also from
defatul 20s to 5s. Main motivation is that during repair we often loose
lots of time to dial which eventually will fail. New timeout should be
still enough to dial but we will move forward quicker to next node if
that one will fail.
Timeout is also applied directly as context timeout in case we will
use noise of tcp fast open one day.
Change-Id: I021bf459af49b11241e314fa1a7887c81d5214ea
We missed to set placement as a part of selection request. It can case
uploading repaired data out of specified placement.
I will provide test as a separate change.
Change-Id: I4efe67f2d5f545a1d70e831e5d297f0977a4eed1
We were reusing a slice to save on allocations, but it turns out the
function using it was being called in multiple goroutines at the same
time.
This is definitely a problem with repairer/segments.go. I'm not 100%
sure if it also is a problem with checker/observer.go, but I'm making
the change there as well to be on the safe side for now.
Repair workers only ran with this bug on testing satellites, and it
looks like the worst that could have happened was that we repaired
pieces off of well-behaved, non-clumped, in-placement nodes by mistake.
Change-Id: I33c112b05941b63d066caab6a34a543840c6b85d
Segment repairer should take into account segment 'placement' field
and remove or repair pieces from nodes that are outside this placement.
In case when after considering pieces out of placement we are still above
repair threshold we are only updating segment pieces to remove
problematic pieces. Otherwise we are doing regular repair.
https://github.com/storj/storj/issues/5896
Change-Id: I72b652aff2e6b20be3ac6dbfb1d32c2840ce3d59
It seems that the "what pieces are clumped" code does not work right, so
this logic is causing repair overload or other repair failures.
Hide it behind a flag while we figure out what is going on, so that
repair can still work in the meantime.
Change-Id: If83ef7895cba870353a67ab13573193d92fff80b
We avoid putting more than one piece of a segment on the same /24
network (or /64 for ipv6). However, it is possible for multiple pieces
of the same segment to move to the same network over time. Nodes can
change addresses, or segments could be uploaded with dev settings, etc.
We will call such pieces "clumped", as they are clumped into the same
net, and are much more likely to be lost or preserved together.
This change teaches the repair checker to recognize segments which have
clumped pieces, and put them in the repair queue. It also teaches the
repair worker to repair such segments (treating clumped pieces as
"retrievable but unhealthy"; i.e., they will be replaced on new nodes if
possible).
Refs: https://github.com/storj/storj/issues/5391
Change-Id: Iaa9e339fee8f80f4ad39895438e9f18606338908
The following tests should be made less flaky by this change:
- TestFailedDataRepair
- TestOfflineNodeDataRepair
- TestUnknownErrorDataRepair
- TestMissingPieceDataRepair_Succeed
- TestMissingPieceDataRepair
- TestCorruptDataRepair_Succeed
- TestCorruptDataRepair_Failed
This follows on to a change in commit 6bb64796. Nearly all tests in the
repair suite used to rely on events happening in a certain order. After
some of our performance work, those things no longer happen in that
expected order every time. This caused much flakiness.
The fix in 6bb64796 was sufficient for the tests operating directly on
an `*ECRepairer` instance, but not for the tests that make use of the
repairer by way of the repair queue and the repair worker. These tests
needed a different way to indicate the number of expected failures. This
change provides that different way.
Refs: https://github.com/storj/storj/issues/5736
Refs: https://github.com/storj/storj/issues/5718
Refs: https://github.com/storj/storj/issues/5715
Refs: https://github.com/storj/storj/issues/5609
Change-Id: Iddcf5be3a3ace7ad35fddb513ab53dd3f2f0eb0e
It was possible to get into a situation where successfulPieces =
es.RequiredCount(), errorCount < minFailures, and inProgress == 0 (when
the succeeding gets all completed before the failures), whereupon the
last goroutine in the limiter would sit and wait forever for another
goroutine to finish.
This change corrects the handling of that situation.
As an aside, this is really pretty confusing code and we should think
about redoing the whole function.
Change-Id: Ifa3d3ad92bc755e563fd06b2aa01ef6147075a69
This code is essentially replacement for eestream.CalcPieceSize. To call
eestream.CalcPieceSize we need eestream.RedundancyStrategy which is not
trivial to get as it requires infectious.FEC. For example infectious.FEC
creation is visible on GE loop observer CPU profile because we were
doing this for each segment in DB.
New method was added to storj.Redundancy and here we are just wiring it
with metabase Segment.
BenchmarkSegmentPieceSize
BenchmarkSegmentPieceSize/eestream.CalcPieceSize
BenchmarkSegmentPieceSize/eestream.CalcPieceSize-8 5822 189189 ns/op 9776 B/op 8 allocs/op
BenchmarkSegmentPieceSize/segment.PieceSize
BenchmarkSegmentPieceSize/segment.PieceSize-8 94721329 11.49 ns/op 0 B/op 0 allocs/op
Change-Id: I5a8b4237aedd1424c54ed0af448061a236b00295
Several tests using `(*ECRepairer).Get()` have begun to exhibit flaky
results. The tests are expecting to see failures in certain cases, but
the failures are not present. It appears that the cause of this is that,
sometimes, the fastest good nodes are able to satisfy the repairer
(providing RequiredCount pieces) before the repairer is able to identify
the problem scenario we have laid out.
In this commit, we add an argument to `(*ECRepairer).Get()` which
specifies how many failure results are expected. In normal/production
conditions, this parameter will be 0, meaning Get need not wait for
any errors and should only report those that arrived while waiting for
RequiredCount pieces (the existing behavior). But in these tests, we can
request that Get() wait for enough results to see the errors we are
expecting.
Refs: https://github.com/storj/storj/issues/5593
Change-Id: I2920edb6b5a344491786aab794d1be6372c07cf8
implemented observer and partial, created new structures to keep mon
metrics remain in same way as in segment loop
Change-Id: I209c126096c84b94d4717332e56238266f6cd004
The Reporter is responsible for processing results from auditing
operations, logging the results, disqualifying nodes that reached
the maximum reverification count, and passing the results on to
the reputation system.
In this commit, we extend the Reporter so that it knows how to process
the results of piecewise reverification audits.
We also change most reporter-related tests so that reverifications
happen as piecewise reverification audits, exercising the new code.
Note that piecewise reverification audits are not yet being done outside
of tests. In a later commit, we will switch from doing segmentwise
reverifications to piecewise reverifications, as part of the
audit-scaling effort.
Refs: https://github.com/storj/storj/issues/5230
Change-Id: I9438164ce1ea4d9a1790d18d0e1046a8eb04d8e9
Reputation updates during repair currently consumes a lot of database
resources. Sometimes increasing the rate of repair is more important
than auditing a node based on whether they have or don't have the
correct piece during repair. This is the job of the audit service.
This commit is to implement an intermediate solution from this issue: https://github.com/storj/storj/issues/5089
This commit does not address the more in-depth fix discussed here: https://github.com/storj/storj/issues/4939
Change-Id: I4163b18d78a96fadf5265789fd73c8aa8def0e9f
We have an alert on `repair_too_many_nodes_failed` which fires too
frequently. Every time so far, it has been because of a network blip of
some nature on the satellite side.
Satellite operators are expected to have other means in place for
alerting on network problems and fixing them, so it's not necessary for
the repair framework to act in that way.
Instead, in this change, we change the way that
`repair_too_many_nodes_failed` works. When a repair fails, we collect
piece fetch errors by type and determine from them whether it looks like
we are having network problems (most errors are connection failures,
possibly also some successful connections which subsequently time out)
or whether something else has happened.
We will now only emit `repair_too_many_nodes_failed` when the outcome
does not look like a network failure. In the network failure case, we
will instead emit `repair_suspected_network_problem`.
Refs: https://github.com/storj/storj/issues/4669
Change-Id: I49df98da5df9c606b95ad08a2bdfec8092fba926
This structure is entirely unused within the audit module, and is only
used by repair code. Accordingly, this change moves the structure from
audit code to repair code.
Also, we take the opportunity here to rename the structure to something
less generic.
Refs: https://github.com/storj/storj/issues/4669
Change-Id: If85b37e08620cda1fde2afe98206293e02b5c36e
We retry a GET_REPAIR operation in one case, and one case only (as far
as I can determine): when we are trying to connect to a node using its
last known working IP and port combination rather than its supplied
hostname, and we think the operation failed the first time because of a
Dial failure.
However, logs collected from storage node operators along with logs
collected from satellites are strongly indicating that we are retrying
GET_REPAIR operations in some cases even when we succeeded in connecting
to the node the first time. This results in the node complaining loudly
about being given a duplicate order limit (as it should), whereupon the
satellite counts that as an unknown error and potentially penalizes the
node.
See discussion at
https://forum.storj.io/t/get-repair-error-used-serial-already-exists-in-store/17922/36
.
Investigation into this problem has revealed that
`!piecestore.CloseError.Has(err)` may not be the best way of determining
whether a problem occurred during Dial. In fact, it is probably
downright Wrong. Handling of errors on a stream is somewhat complicated,
but it would appear that there are several paths by which an RPC error
originating on the remote side might show up during the Close() call,
and would thus be labeled as a "CloseError".
This change creates a new error class, repairer.ErrDialFailed, with
which we will now wrap errors that _really definitely_ occurred during
a Dial call. We will use this class to determine whether or not to retry
a GET_REPAIR operation. The error will still also be wrapped with
whatever wrapper classes it used to be wrapped with, so the potential
for breakage here should be minimal.
Refs: https://github.com/storj/storj/issues/4687
Change-Id: Ifdd3deadc8258f34cf3fbc42aff393fa545794eb
To save load on DNS servers, the repair code first tries to dial the
last known good ip and port for a node, and then falls back to a DNS
lookup only if we fail to connect to the last known good ip and port.
However, it looks like we are seeing errors during the client stream
Close() call (probably due to quic-go code), and those are classified
the same as errors encountered during Dial. The repairer code sees this
error, assumes that we failed to contact the node, and retries- but
since we did actually succeed in connecting the first time around, this
results in submitting the same order limit (with the same serial number)
to the storage node, which (rightfully) rejects it.
So together with change I055c186d5fd4e79560f67763175bc3130b9bc7d2 in
storj/uplink, this should avoid the double submission and avoid dinging
nodes' suspension scores unfairly.
See https://github.com/storj/storj/issues/4687.
Also, moving the testsuite directory check up above check-monkit in the
Jenkins Lint task, so that a non-tidy testsuite/go.mod can be recognized
and handled before everything breaks weirdly and seemingly randomly
later on.
Change-Id: Icb2b05aaff921d0af6aba10e450ac7e0a7bb2655
For nodes in excluded areas, we don't necessarily want to remove them
from the pointer, but we do want to increase the number of pieces in the
segment in case those excluded area nodes go down. To do that, we
increase the number of pieces repaired by the number of pieces in
excluded areas.
Change-Id: I0424f1bcd7e93f33eb3eeeec79dbada3b3ea1f3a
The "satellite fetch-pieces" command allows a satellite operator to
fetch as many pieces of a segment as possible, along with their
original order limits and hashes as provided by the storage nodes. The
fetched pieces and associated info will be stored on in a specified
folder as they are, rather than being RS-decoded or decrypted.
It is hoped that this will allow easier debugging of certain one-off
problems we've observed in the wild.
Change-Id: I42ae0e9ef0023538e42473a9be5a2460a3ac0f3a
inconsistency
The original design had a flaw which can potentially cause discrepancy
for nodes reputation status between reputations table and nodes table.
In the event of a failure(network issue, db failure, satellite failure, etc.)
happens between update to reputations table and update to nodes table, data
can be out of sync.
This PR tries to fix above issue by passing through node's reputation from
the beginning of an audit/repair(this data is from nodes table) to the next
update in reputation service. If the updated reputation status from the service
is different from the existing node status, the service will try to update nodes
table. In the case of a failure, the service will be able to try update nodes
table again since it can see the discrepancy of the data. This will allow
both tables to be in-sync eventually.
Change-Id: Ic22130b4503a594b7177237b18f7e68305c2f122
If satellite can't find enough nodes to successfully download a segment,
it probably is not the fault of storage nodes.
Change-Id: I681f66056df0bb940da9edb3a7dbb3658c0a56cb
work
Since we have changed the repair worker to also mark a node as audit
failure if they return a not found error, we should ignore expired
segments when possible
Change-Id: Ie6a677e1d7b234e93965c736d05950440236653c
Update repair tests to check if audit score increases for nodes
that successfully send pieces during successfull and failed repairs.
Change-Id: Ie6abbde6155ab4697d209366c9fa497e731756e9
When we can't complete an audit or repair, we need more information about
what happened during each individual share/piece download.
In audit, add the number of offline, unknown, contained, failed nodes to
the error log. In repair, combine the errors from each download and add
them to the error log.
Change-Id: Ic5d2a0f3f291f26cb82662bfb37355dd2b5c89ba
This change adds a NOT NULL constraint to the created_at column in the segment table.
All occurrences of CreatedAt as a pointer are changed to non pointer version (metabase, segment loop, etc)
Change-Id: I3efd476ebd1edd3327b69c9223d9edc800e1cc52
This change adds dedicated methods on metabase.Pieces to be able to add, remove pieces and also to check duplicates.
Change-Id: I21aaeff40c017c2ebe1cc85a864ae546754769cc
Sometimes we see timeouts from DNS lookups when trying to do
repair GETs. Solution: try using node's last IP and port first.
If we can't connect, retry with DNS lookup.
Change-Id: I59e223aebb436118779fb18378f6e09d072f12be
We want to use StreamID/Position to identify injured
segment. As it is hard to alter existing injuredsegments
table we are adding a new table that will replace existing
one. Old table will be dropped later.
Change-Id: I0d3b06522645013178b6678c19378ebafe485c49
This is part of metaloop refactoring. We plan to remove
irreparable at some point but there was not time for it.
Now instead refatoring it for segmentloop its just easier
to drop it.
Later we still need to drop table with migration step.
Change-Id: I270e77f119273d39a1ecdcf5e1c37a5662a29ab4
Satellites set their configuration values to default values using
cfgstruct, however, it turns out our tests don't test these values
at all! Instead, they have a completely separate definition system
that is easy to forget about.
As is to be expected, these values have drifted, and it appears
in a few cases test planet is testing unreasonable values that we
won't see in production, or perhaps worse, features enabled in
production were missed and weren't enabled in testplanet.
This change makes it so all values are configured the same,
systematic way, so it's easy to see when test values are different
than dev values or release values, and it's less hard to forget
to enable features in testplanet.
In terms of reviewing, this change should be actually fairly
easy to review, considering private/testplanet/satellite.go keeps
the current config system and the new one and confirms that they
result in identical configurations, so you can be certain that
nothing was missed and the config is all correct.
You can also check the config lock to see what actual config
values changed.
Change-Id: I6715d0794887f577e21742afcf56fd2b9d12170e
